Research on Heating Technology of Distributed Optical Fiber

doi:10.3969/j.issn.1001-5485.2013.11.0242013,30(11):119-122

Journal of Changjiang River Scientific Research Institute ›› 2013, Vol. 30 ›› Issue (11): 119-123.DOI: 10.3969/j.issn.1001-5485.2013.11.0242013,30(11):119-122

• Orignal Article • Previous Articles

Research on Heating Technology of Distributed Optical Fiber

GAN Xiao-qing^1,2, ZHAO Jun-hua², LI Shen-ting³, LI Duan-you²

1.School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430070, China;
2.Yangtze River Scientific Research Institute, Wuhan 430010, China;
3.Xuchang Branch of HenanProvincial Bureau of the Construction and Administration of Middle Route Project of South-to-NorthWater Transfer, Xuchang 461000,China

Received:2013-08-23 Revised:2013-11-07 Published:2013-11-30 Online:2013-11-30

Abstract

Abstract: Distributed optical fiber has been increasingly used in dam (dike) seepage monitoring, but its application is restricted by long heating time and low efficiency. First, the technical requirements of distributed fiber optic cable with heating function are expounded in this paper. Then the quantitative relationship between heating time and other factors, including heating-conductor length, cross-sectional area and resistance, are analyzed. In overall consideration of the material, flexibility, tensile strength, resistivity, optical fiber structure, and insulation of the heating conductor, a special distributed fiber optic cable with heating function was customized with lowest cost and was applied to the leakage monitoring for the first stage project of middle route South-to-North water transfer. The results showed that the customized distributed fiber optic cable meets the heating-requirements, demonstrating good market prospect.

Key words: distributed optical fiber, heating, nickel-chromium alloy, fiber structure, South-to-North water transfer

CLC Number:

GAN Xiao-qing, ZHAO Jun-hua, LI Shen-ting, LI Duan-you. Research on Heating Technology of Distributed Optical Fiber[J]. Journal of Changjiang River Scientific Research Institute, 2013, 30(11): 119-123.

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Research on Heating Technology of Distributed Optical Fiber

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